$SPY just broke below its 50-day moving average—first time since July.

That's seven months of holding support, gone. The 50-day is one of those lines traders watch religiously. When it breaks, it often signals a shift in momentum.

This doesn't mean panic. It means pay attention. We've seen similar breaks before that led to deeper pullbacks, and we've seen quick recoveries too.

What matters now: Does it reclaim that level quickly, or do we grind lower? Watch how price behaves around this zone over the next few sessions.

Market structure is changing. Trade accordingly.